Incandescent electric lamp.



A. LEDRER. 'INUANDBSGENT BLEGTR'I'U LAMP. APLIGATION LBD AUG. Soi le; i Patented Sept 27, 1910.

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Nrrnn s'rrrins PATENT OFFICE.

.ANTON LEDERER, OF ATZGERSDORF, NEAR VIENNA, AUSTRIA-HUNGARY, ASSIGNOR T0 WESTINGHOUSE LAMP COMPANY, 0F IBLOGMFIELD,

NEW JERSEY, A .CORPORA- INCANDESCENT ELECTRIC LAMP.

Speccation of Letters Patent. Patented Sept. 27, 1910.

Application filed. August 3C',` 1906. Serial No. 332,721.

To all whom it may concern:

Be it known that I, ANTON LEDERER, a subject of the Empire of Austria-Hungary, residing at No. S3 Atzgersdorf, nean'Vienna, in the Province of Lower Austria and E1np'rre of Austria-I-Iungary, have invented certain new and useful Improvements in Iny the following is a specification.

The invention relates to the construction of incandescent electric lamps employing fragile filaments'such, for instance, as those made of brittle metals, the object being to provide a means for supporting suitable lengths of filament in a convenient manner, reducing, to breakage.

In the accompanying drawings` Figure l is an elevatiouof a support for the filaments with the filaments in position; Fig. shows the support without the filaments; and I*`i f.

3 illustrates a modification.

Referring to Figs. l and '2, a represents the stem of the lamp. It is provided with an extension, D. which may be either tubular' or solid. lVitliin this extension are placed conducting wires, 7L, 71., for the electric current. In case the extension is solid these conducting wires will be embedded within the or other port. at proper intervals for anchoring or supporting tie filaments, y, g. rl"he supports c are applied to the filaments in any convenient manner. The supports fi are fastened to the extension I) by means of wires (Z. it the endof the extension 7u there is fastened a second extension of similar character designed to receive any required number of filaments and it is provided with an extension c carryinghooks or supports c supported in like manner by wires cl. Terminal supports f are provided for receiving` the ends of the filaments which are carried bythe lastnamed extension. The leading-in Wires, 7L, h. are here shown as being so arranged in Fig. 1 as to connect all the filaments in series. In Fig. 2, one of the leading-in Wires la passes directly to the extenas far as practicable, the liability suitable material forming the sup- Guides or supports, c. w., are provided i l having their circuit connections changed as required.

sion e; It will be understood thatvariou's modiiications 1n arrangement of the leading-in wires may be made.

In Iig. 3 an arrangement is shown in which the filaments hang toward .the stem of the lamp instead of from the stem as in 5 Figs. I and 2.

Filaments arranged according to the manners herein setforth are readily adaptable to being connected in multiple or in series or I claim as my invention:

1. In an electric lamp, a filament support, a light-giving portion surrounding said support and arranged in lines substantially parallely to its axis, an extension for'said sup- )ort and a second liohtivinv )ortion sinnlarly arranged and surrouuling the said eX- tension.

2. In an electric lamp two light-giving portions each arranged in the forni of a hollow cylinder, the lines' ofthe filament forming such cylinder being substantially parallel with its axis.

3. In an electric lamp a filament support 75 surrounded by the light-giving portion arranged to* form luminous lines substantially parallel withits axis, a second support coaxial with the former and similarly surrounded by a second light-givingportion also arranged to form luminous lines substantially parallel with its axis.

l. In an incandescent.- electric lamp, the combination of a central supporting stem, a series ofv incandescent filaments of U- Shape form, supports for said filaments at or near one end of the central support, a second series of filaments arranged around an extension of said support in a similar manner, and supports for the second set of 90 filaments located beyond the looped portions of the first series of filaments.

In witness whereof I have hereunto'set my hand in presence of two Witnesses.

ANTON LEDERER. 

